What is the LCM of 10, 15 and 20?

2011

Answer: A. 60 — To find the LCM of 10, 15, and 20, we first determine the prime factorization of each number. 10 = 2 × 5, 15 = 3 × 5, and 20 = 2² × 5. The LCM is the product…

A.
60
B.
40
C.
30
D.
20

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Correct answer: A

To find the LCM of 10, 15, and 20, we first determine the prime factorization of each number.

10 = 2 × 5, 15 = 3 × 5, and 20 = 2² × 5.

The LCM is the product of the highest power of each prime factor: 2² × 3 × 5 = 60.

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